Mold for ice-cream-cone machines.



F. A. BRUCKMAN.

MOLD roa ICE CREAM CONE MACHINES.

APPLICATION FILED IAN-3| I917- RENEWED DEC. 26,1911.

. Patented Aug. 6, 1918.

2 SHEETS-SHEET l- 2 niETE 7/ INVENTOR FA.Bruc/rman Y BY Ga ATTORNEVSY.

F. A. BRUCKMAN.

MOLD FOR ICE CREAM CONE MACHINES.

APPLICAUON FILED 1111.3 1911. RENEWED DEC. 26,1911.

1,274,506. 1 Patented Aug. 6, 1918.

2 SHEETSSHEET 2.

INVENTOR EAB ruckmwn BY I f M77 ATTORNEYS.

FREDERICK A. BBUCKMAN, OI? PORTLAND, OREGON.

MOLD FOR ICE-CREAM-CONE MACHINES.

Specification of Letters Patent.

Patented Aug. 6, 1918.

Application filed Tanuary s, 1917, Serial No. 140,402. Renewed December 26, 1917. Serial No. 208,982.

b all whom it may concern:

Be it known that I, FREDERICK A. BRUCK- MAN, residing at Portland, in the county of Multnomah and State of Oregon, have invented certain new and useful Improvements in Molds for Ice-Cream-Cone Machines, of which the following is a specification.

My invention relates to certain new and useful improvements in molds especially de signed for use in connection with ice cream cone machines of the type disclosed in my Patents #1,071,027 granted August 26, 1913, #1,075,625 granted October 11, 1913, #1,091,729 granted March 31, 1914 and #1,1 19,239 granted December 1, 1914.

In machines of the type described, the molding devices consist of a pair of separable female mold halves or sections containing the coniform mold cavities which c0- operate with cores that are mounted on a core carrier or bar. In operating these molds, the core carricr is raised to lift the cores out of the molds, the core carrier in my machine being mounted for pivotal movement on a horizontal axis in the plane of parting of the female molds while the female molds open laterally and are carried on pivoted arms that are pivoted on a vertical axis to open somewhat in a scissors fashion.

Considerable difficulty has been experienced in getting the cores to center properly in the moldcavities. In order that this might be accomplished I have heretofore provided the upper ends of the mold cavities with countersunk concavedsurfaces that are designed to match with corresponding v convex surfaces on the plug heads; the theory being that when the plug convexed sur-' from the core bar by springs which allow the cores to yield upwardly to permit escape of steam, or to allow for unevenness on the adjustment of the cores on the core bar, and it not infrequently happens that when the cores are descending into the mold cavities, in which there is contained batter, the core heads will not engage properly into the convex surfaces of the female molds but will hang on the edge, thus throwing the cores laterally on a curve whose center is point of hang or contact between the core head and the mold. This causes the baking'of an uneven product, 2'. (1., one side of the cone is thin and the other side thick and where the batter regulation is such as to supply just the desired amount of batter, when the core is not centered properly, too much of the batter is allowed to escape around the head and form an excess protuberance along one part of the edge or mouth of the cone. This protuberance is usually called a head, in practice, and has to be trimmed off. WVhere the head is lopsided and the cone is not properly formed, the cone frequently is rendered unfit for use before it is discharged from the machine.

My present invention therefore especially has for its object to provide means for positively centering the core in the female mold cavity, to close the mouth of the cavity around its entire edge, and when the cores yield to permit escape of steam, cause the cores to yield vertically without pivotal movement whereby any excess batter will flow out and form a complete annular ringlike head which can be easily trimmed off, as the cone passes through the trimming mechanism without injuring the cone.

It has also been found dilficult to keep the cores heated to the same temperature as the female molds, because of the fact that the female molds receive the direct heat from the burners and being of lesser thickness than the core, the heat is more quickly conducted to the baking wall and therefore another objectof my present invention is to improve the construction of the core whereby a greater application of heat to the core is made possible than in the constructions in my patents hcrcinbefore referred to.

Generically, my invention resides in enlarging the convexed surfaces of the upper edge of the female mold cavities to a greater diameter than that of the core head (to allow for escape of excess batter) and providing the female molds with centering pins that snugly engage the core head and permit rise and fall of the core during the process of expansion of the baking product with a motion along the axis of the core and the female mold cavity, thus insuring the absolute centering of the core in the mold cavity when it enters the same and insuring the'core remaining centered during the expansion movements.

In its more detailed nature, the invention comprises those novel details of construction, combination and arrangement of parts, all of which will be first fully described, then be specifically pointed out in the appended claims, reference being had to the accompanying drawings, in which Figure 1 is a top plan view of one of the molding units embodying my invention.

Fig. 2 is a cross sectionon the line22 of Fig. 1. I

Fig. 3 is a perspective view of one of the core elements looking at the same from above.

Fig. 4 is a perspective view of one of the core elements looking at the same from below. j

Fig. 5 is an inverted plan view of one of the core elements.

Fig. 6 is an enlarged sectional view on substantially the line 6-6 of Fig. 1, illustrating the invention in use.

Fig. 7 is anenlarged detail view illustrating the manner in which the centering pins cooperate with the core head to maintain the core centered with relation to the female mold cavities.

Fig. 8 is a detail top plan view of a portion of the mechanism shown in Fig. 6.

Fig. 9 is a view similar to Fig. 6 showing how the core gets off center when the old form of mold and core is employed, no cen- I tering pins being used.

Fig. 10 is an inverted horizontal section of the core head taken just above the annular body 9 in Fig. r1,

Referring-now to the accompanying drawings, in which like numerals and letters of reference indicate like parts in all of the figures, 1 represents the female mold carrying arms on which the female mold members proper 22 are located, the members 22 having the conical molding cavities 3, whose upper ends are usually somewhat enlarged as at 3 to form the mouth of the cone. The molds 2 at the extreme upper edge of the mold cavities 3 are provided with concaved seats 3 of like curvature to the convexed seats 10 of the core heads 9. In the old construction, the diameter of the concaved seats 3 was substantially the same as that of the convexed surfaces 10, but in thepresent' form, the diameter of the seats 3 is greater than that of the head 9 (see Figs. 6, 7 and 8) to provide a uniform escapeway for the ex cess batter on expansion, as will be more clearly understood presently.

- '4 designates the sheet metal oven sides which are carried by the female mold members, and in my Patent #1,091,729"hereinbefore referred to, the oven covers are I formed by the tops of the core units.

5' designates the core bar which is provided with bores 6 through which the fastening studs 7 pass and are tapped into the threaded apertures 15 of the core head 9.

The studs are mounted for sliding and universal movement in the core bar 5. 8 designates the cores which are in units, one for each core cavity, and each of the cores 8 includes a head 9 having its under surface 9 in a plane normal to the axis of the core 8, the head 9 being of a diameter greater than the greatest diameter of the cone mouth forming enlargement 3 so as to form a clo sure for the same when the parts are in the baking position, (see Figs. 6 and 7). The core head 9 includes a portion 8 which connects it with the top plate '12, the underside becoming tangled up with-an adjacent unitin practice as would be the case were the abutting edges pf adjacent plates 12 thin as has been the practice in .the Bruckman ma' chines heretofore,,z'. 6., of a thickness, for instance, equal to that between the upper surface indicated by 12 in Fig. 2, and the dotted lines just below such, being the thickness of the metal 12 where the ribs 11 are omitted. Vere the curved ends 12 simply provided toabut one another and the lugsv 13 not projected downwardly from the curved ends practice has demonstrated that the plates 12 would interfere with one another and tend to overlap or ride up one on the other, due to the movement allowed by the pins 7. This is avoided by forming the lugs 13 nearly the full depth'of the ribs 11 and thickness of plate 12, asshown. Thus, by reason of the lugs 13 heat circulating passages or slots 13 are provided between the tops of the adjacent core units (see Fig. 1).

The top surfaces of the plates 12 are recessed, as at 14* to receive the leaf springs 14 which tend to press the cores downwardly from the core bar 5 but which are suflicicutly yieldable to permit the cores to rise under the expansive action of the bakingproduct and permit escape of the gases formed, as

same diametric distance apart as the extreme diameter of ill? C01? head. 9, or in other words, the lugs 16 engage the cylindrical surface 10 of the cone head 9 at all times when the core is in the mold.

- The lugs 16 are also provided with Leveled surfaces 16 so that should the core heads 9 be out of alinement, as the cores are entering the mold, the 'convexed surfaces 10 will engage the inclined surfaces 16 and cause the core to slide over into alinement so that when the core hasbeen inserted into the mold, as shown in Fig. 6, it will be in a position with its axis coincident with the axis of the female mold cavity.

In practice, the batter is placed in the mold cavities by dipping the cores into the batter, the cores being dipped until the batter reaches a line 17 on the core (see Fig. 6) after which, the core is inserted into the mold cavity and the batter 17 assumes the position shown in Fig. 6. The molds, however, being hot, the rising and baking action innnediately takes place, with the result that the batter 17 expands to fill the mouth enlargement 3 of the mold and form the annular rim of the cone. Steam forn'iing, collects in the enlargement 3 and by its pressure against the core head 9, raises the core and escapes. Should the batter 17 expand more than enough to fill the space 3, the batter will flow out between the convexed surface 10 of the core head 9 and the concaved counter-bore 3" of the mold and form a ring-like head on the cone which will be uniform all around the cone except where the lugs or centering pin 16 are located, the lugs or centering pins 16 act as dividers for the overflow head or ring so that when the cone is trimmed in the trimmer the trimming instead of being a closed ring will be in four parts making it easier to separate the trimmings from the cone in the separating mechanism which is employed in connection with the machine, and which is shown in my Patent No. 1,091,730, granted -March 31, 1914.

The female molds part on the line 2 in order to discharge the molded product. As

the means for discharging the molded product forms no part of the present inventlon, a further description of the same is not believed to be necessary, but referenceto my former patents above referred to will make the same clear.

In Fig. 7 I have shown indotted lines the position the core assumes during the escape of steam or overflow of batter.

Practice has demonstrated that with the use of my present invention, the cones turned out are of a far more uniform structure than was possible to produce in the molds heretofore employed and furthermore a more exact adjustment of the batter feeding mechanism can be obtained so as to put just enough batter on the cores when they dip to completely fill the female mold cavities without the formation of more than a trace of heads. In fact, I have been able to adjust the batter feeding mechanism so finely that almost perfect cones are pro-,

in the art.

What I claim .is:

1. A pair of separable female mold sections each having a half-cone cavity, a core bar, a core suingably supported from said bar, said core having a head projecting' above the top of the female mold sections, and centering lugs mounted on the top' of the female mold sections and adapted to engage the core head.

2. A pair of separable female mold sections each having a half-cone cavity, a core bar, a core swingably supported from said bar, said core having a head projecting above the top of the female mold sections, centering lugs mounted on the top of the female mold sections and adapted to engage the core head, said female mold sections having concave recesses at the upper edge of the cavity, said core head having a convex scat surface to oppose the concave recess to leave anannular space around the core head. I

3. A pair of separable female mold sec tions each having a half-cone cavity, a core bar, a core pendently supported from said ball, said core having a head projecting above the top of the female mold sect ions, centering lugs mounted on the top of the female mold sections and adapted to engage the core head, said female mold sections having concave recesses at; the upper edge of the cavity of greater diameter than the diameter of the core head to leave an annular space around the core head.

4. A pair of separable female mold sections each having a half-cone cavity. a core bar, a core pendently and swingably supported from said bar, said core having a head projecting above the top of the female mold sections, centering lugs mounted on the top of the female mold sections and adapted to engage the core head, said core head having a vertical cylindrical surface to be engaged by said lugs to constrain the movement of the core under the action of the baking product to movement along the axis of the core and cavity.

5. A pair of separable female mold sections each having a half-cone cavity, a core bar, a core swingably supported from said bar, said core having a head projecting above the top of the female mold sections,centering head havlng a convex seat surface to oppose a the concave recess, said core head having a vertical cylindrical surface to be engaged by said lugs to constrain the movement of the core under the'action of the baking product to movement along the axis of the core and cavity.

6. A pair of separable female mold sections each having a half-cone cavity, a core bar, 'a cOre pendently supported from said bar, said core having a head projecting above the top of the female mold sections, centering lugs mounted on the top of the female mold sections and adapted to engage the core head, said female mold sections having concave recesses at the upper edge of the cavity of greater diameter than the diameter of the core head to leave an annular space around the core head, said core head having a vertical cylindrical surface to be engaged by said lugs to constrain the movement of the core under the action of the baking proch uct to movement along the axis of the core and cavity.

7. In combination with the separable fe' male mold sections each havin matching half-cone cavities and fiat upper surfaces, a core bar, a conical core axially-yieldablyswingably supported on said bar to enter the mold cavity, said core having a head provided with a flat surface normal to the axis of the core, and a vertical cylindrical surface, said head being adapted to form a top closure for the mold cavity, and centering lugs located on the top of the female mold sections to engage said head.

8. In combination with the separable female mold sections each having. matching half-cone cavities and flat upper surfaces, acore bar, a conical core axially-yieldablyswingably supported on said bar to enter the mold cavity, said core having a head provided with a flat surface normal to the axis of the core, a vertical cylindrical surface, said head being adapted to form a top closure for the mold cavity, centering lugs.

mounted on the top of the female mold sections to engage said head, said lugs having vertical head-engaging surfaces to constrain vthe movement of the core under its yielding action to movement along the vertical axis of the core and cavity.

9. In combination: with the separable female mold sections each having matching half-cone cavities and flat upper surfaces, a core bar, a. conical core axially-yieldablyswingably supported on said bar to enter the mold cavity, said core having a head provided with a flat surface normal to the axis of the core, a vertical cylindrical surface, said head being adapted to form a topclotially having beveled corners on the sides adjacent to the core head.

10. In combination with the separable female mold sections each having matching half-cone cavities and fiat upper surfaces, a core bar,a conical core axially yieldably supported on said bar to enter the mold cavity, said core having a head provided with a fiat surface normal to the axis of the core, a vertical cylindrical surface, said head being adapted to form atop closure for the mold cavity, centering lugs mounted on the top of the female mold sections to engage said head, said lugs having vertical head engaging surfaces to constrain the movement of the core under its yielding action to movement along the vertical axis of the core and cavity and said lugs having beveled corners on the sides adjacent to the core head, said mold sections having core head receiving recesses. of greater diameter than the core head to leave an annular space around the core head.

11. Asa new article, a core element comthe top plate to the head and laterally beyondthe head, the lateral extremities of said top plate being curved over,

said top plate forming an oven cover, said ribs consisting of outer center and intermediate members, the outer members extending the. entire 'length of the top plate, the center members merging with the neck and the intermediate rib members terminating short of the neck substan- I to leave heat circulating passages,

as shown and described.

13. As a new article, core element comprising a top plate, ahead, tween the head and top plate, and a conical projection from the head, ribs extending from the top plate to the head and laterally beyond the head, the lateral extremities of said top plate being curved over, said top plate forming an oven cover, and spacing lugs on the sides of the top plate whereby one cone element will be spaced from an adjacent cone heat escape passageway.

1%. As a new article, a core element comprising a top plate, a head, a neck between the'head and top plate, and a conical projection from the head, ribs extending from a neck beelement to leave a from the head, ribs extending from the to plate to the head and laterally beyond the head, the lateral extremities of said top plate bjeing curved over, said top plate forming an oven cover, said ribs consisting of outer center and intermediate members, the outer members extending the entire length of the top plate, the center members merging with the neck and the intermediate rib members terminating short of the neck to leave heat circulating passages, and spacing lugs on the sides of the top plate whereby one cone element will be spaced from an adjacent cone element to leave a heat escape passageway.

15. In a baking mold, the combination with the separable female mold sections each having a plurality of semi-coniform cavities those of one section being adapted to match with those of the other section, oven side members carried by said female mold sections, a core bar, a plurality of distinct core units, one for each mold cavity, each of said units comprising an oven cover plate having transverse ribs on its underside, cone head below the ribs and connected with said platebya neck, a conical core pendent from said head, and meanslfor supporting said core elements from said core bar.

16. In a bakingmold, the combination with the separable female mold sections each having a plurality of semi-coniform cavities, those of one section being adapted to match with those of the other section, oven side members carried by said female mold sections, a core bar, a plurality of distinct core units, one for each mold cavity, each of said units comprising an oven cover plate having transverse ribs on its underside, a cone head below the ribs and connected with said plate by a neck, a conical core pendent from said head, and means for yieldably and loosely suspending said core elements from said core bar, said oven cover plates of said core elements having spacing lugs whereby adjacent core element plates are spaced apart to provide heat escape passages.

17. In a baking mold, the combination with the separable female mold sections each having a plurality of semi-coniform cavities, those of one section being adapted to match with those of the other section, oven side members carried by said female mold sections, a core bar, a plurality of distinct core units, one for each mold cavity, each of said units comprising an oven cover plate having transverse ribs on its underside, a

cone head below the ribs and connected with said plate by a neck, a conical. core pendent from said head, means for supporting said core elements from said core bar, said female mold sections having centering lugs projecting above the tops of the same to cooperate with said core element heads to maintain the respective cores in axial engagement with the cavities. I

18. In a baking mold, the combination with the separable female mold sections each having a plurality of semi-coniform cavities, those of one section being adapted to match with those of the other section, oven side members carried by said female mold sections, a core bar, a plurality of distinct core units, one for each mold cavity, each of said units comprising an oven cover plate having transverse ribs on its underside, a cone head below the ribs and connected with said plate by a neck, a conical core pendent from said head, means for yieldably and loosely suspending said core elements from said core bar, said oven cover plates of said core elements having spacing lugs whereby adjacent core element plates are spaced apart to provide heat escape passages, said female mold sections having centering lugs projecting above the tops of the same to cooperate with said core element heads to maintain the respective cores in axial engagement with the cavities.

19. In combination, a female mold having a cone cavity, a core bar, a core swingablysupported from said bar, said core having a head projecting above the top of the female mold, and centering lugs located on the top of the female mold and adapted to engage the core head.

20. In combination, a female mold having a cone cavity, a core bar, a core swingably supported from said bar, said core having a head projecting above the top of the female mold, centering lugs located on the top of the female mold and adapted to engage the core head, said head projecting above said lugs.

21. In combination, a female mold having a cone cavity, a core bar, a core swingably supported from said bar, said core having a head projecting above the top of the female mold, centering lugs located on the top of the female mold and adapted to engage the core head, said head projecting above said lugs, said lugs having the corners adjacent to the core head beveled.

FREDERICK A. BRUCKMAN. 

